import java.util.Date;

public  class Test extends Date{
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;

	public static void main(String[] args) {
		new Test().test();
		String s1 = "a";
		String s2 = s1 + "b";
		String s3 = "a" + "b";
		System.out.println(s2 == "ab");
		System.out.println(s3 == "ab");

	}
	
	public void test(){
		System.out.println(super.getClass().getSuperclass().getName());
	}
}
